ITHome · Published 2026-09-10

DeepSeek V4.1 Flash Model Goes Live on the National Supercomputing Internet

Summary: DeepSeek V4.1 Flash went live today on the National Supercomputing Internet. It is a 552B-parameter MoE model built on a brand-new Causal-Encoder-Decoder architecture that significantly cuts costs. Its benchmark scores surpass those of the flagship model, and its greatly compressed KV Cache effectively lowers Agent usage costs. #AILargeModels

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01THE STORY

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02TIMELINE

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First discovered: 2026-09-10; added to the library: 2026-09-11 (Beijing time).

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03SOURCES

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